岩土工程学报2011，Vol.33Issue(3)：460-469,10.
挡土墙被动土压力的滑移线解
Slip-line solution to passive earth pressure on retaining walls
彭明祥1
作者信息
- 1. 广东省电力设计研究院,广东,广州,510663
- 折叠
摘要
Abstract
Based on the limit equilibrium theory, the backfill is treated as a perfectly elastic-plastic material which follows the Mohr-Coulomb yield criterion, and is assumed to be an isotropic, homogeneous and incompressible (or non-expansive) perfectly continuous medium.The stress singularity and its stress boundary condition are introduced, and' a statically determinate and solvable mathematical model for the limit equilibrium boundary value problem is established without considering the stress-strain relationship.Then the slip-line field and stress field in plastic zone of the backfill are solved by use of the slip-line method, furthermore, the passive earth pressure on retaining walls and the reaction on slip surfaces are derived.Geometric and mechanical similarity principle is presented by means of dimensionless analysis.The results show that the slip-line solution to the passive earth pressure is generally less than or equal to the Coulomb's solution, and the classical Rankine's earth pressure or the classical Coulomb's earth pressure satisfying non-singularity condition is in accordance with the slip-line solution, and the Hencky's first theorem and second theorem are not generally applicable.关键词
挡土墙/被动土压力/滑移线解/应力奇点/无量纲分析/相似原理分类
建筑与水利引用本文复制引用
彭明祥..挡土墙被动土压力的滑移线解[J].岩土工程学报,2011,33(3):460-469,10.
